Forespørgsel om at forbinde to tabeller

Hvis FK i Posts.*_Airport_code henviser ikke til Airports.id som MJB antager, men til Airports.Airport_code derefter

SELECT
  APS.Airport_name AS Source,
  APD.Airport_name AS Destination,
  Posts.date_of_departure
FROM Posts
  INNER JOIN Airports APS ON(APS.Airport_code = Posts.Source_Airport_code)
  INNER JOIN Airports APD ON(APD.Airport_code = Posts.Destination_airport_code)